Manually operated press



Aug. l, 1933.

P. J. KEARNEY MANUALLY OPERATED PRESS Filed Nov.

2 Sheets-Sheet l I S FJKEARNEY ft/M Aug. 1, 1933. P. J. KEARNEY 1,920,750

MANUALLY OPERATED PRESS Filed Nov. 2l, 1932 2 Sheets-Sheet 2 Inventur' E 7' 1:1. J. KEARNEY Patented Aug. l? i933, y

Unir-sn star -y l irriguo is earner essieu MANUALLY GPERATED IRESS f r Patrick Kearney, Toronto, Ontario, Canada Application November 21, 1932 Serial No. 643,712

9 Claims.

My invention relates to improvements in manuallyoperated presses and the object of the invention is to devise a hand operated press particularly suitable for use in machine shops, ga-

rages and the like for straightening axles, shaft- -ing, removing lcouplings `from shafting, pressing `in bushings and work oi similar nature.

A further object is-to devise a press which will be capable of taking care of work whether the.,

illustrated in the yacconrpanying drawings inv which,

Fig. 1 represents a iront elevation thereof.

Fig. 2 is a side elevation,y the dotted'lines indicating an alternative horizontal position assumed `by the press frame when it is desired to press vcouplings on" long shafts.

Fig. S'is anenlarged plan View,

Fig. 'fl is a further enlarged vertical section through the cylinder and pump usedin connection with my device showing the means for 'admitting the non-elastic uid to the cylinder and returning it to the tank or reservoir.

Fig. is a urtherenlargedfplan view of the means for admitting the noneelastic fluid to the pump and returning it to the reservoir.

Fig. 6 is a vertical-section'through the line 6-S, Fig. 5, and7 i Fig. l is a vertical '7e-7, Fie. 5.

Like characters sponding parts in the diierent views.

My press has a base plate l or" its frame connected to a base 2 so ,that the frame may be section 'through the line Iswung to assume either a vertical or a horizontal position, depending upon whether the work is located in a horizontal or a vertical position. A transverse member 3 extends between the vertical. stanchions fi of the frame and is adapted to support the cylinder 5 as well as the upper transverse member 5 through the ymedium of interposed I-beams '2. The upper transverse member 6 has the reduced ends ofthe stanchions of reference indicate corre-l extending therethrough and nuts 8 are threaded on the upper ends of such reduced ends.

A, table ior the work may well comprise the two spaced apart I--beams 9 which are secured to the base plate 1 ci the frame, which base plate is adapted to rest upon the base 2 when the fra-me is in the vertical position and be secured thereto `by means Aor the bolts 10. i

Main stanchions 11 positioned between the p stanchions l extend up from the base plate 1 of l the 'frame and their reduced upper ends extend through the transverse members 3 and 6, being provided with nuts 12 threaded on to the upper ends adapted to be screwed down upon the upper transverse member 6.

The cylinder 5 is open at yits lower end and receives the plunger 13, the lower end of said' plunger protruding from the cylinder and being adapted to engage the worl; to be acted upon. The upper 'end of the plunger 13 is provided with .a leather or other suitable disc lll to act as an vobturating medium between the lcylinder wall and the plunger', v

A tubular member 15 extends upwardly from n.the cylinder 5 to a member 16 which carries a relief valve 17, the member 16 having a vertical oriiicel with which the tubulaimeniber 15 communicates and the upper end of 'the vertical passageway 18 also communicates with appump cylinder 19 provided with a reciprocable plunger y2.2. A packing 21 is positioned in an enlarged upper portion of the pump cylinder 19 and surrounds the plunger A stuiiing box 23 is threaded'o'n to the upper end of such pump cylinder 19, the upper end ci the plunger 22 protruding through `the'sturing box and carrying a fork 24 which is pivotally connected to the handle 25 iulcruined on the bracket 25. The bracket 26 is secured upon one 'of the Lbeams 7. The free end of the pump handle lever 25 is provided with a counterweight 2'?, and hinge links 28 mounted on the` same I-beams' 'l are provided with longitudinal slots 29 into which laterally extending pins 30 on the handle 25 extend, such links acting `as means for limiting. the upward and downx'yardv movement of the operating handle of the pump.

Laterally extending hook, members 31 extend outwardly from the plu 13, over which are hooked the lower ends or" the upwardly extending rods 32 which have enlarged upper portions 33 connected together by the yoke'34, such rods 32 extending freely through the upper flange 35 of the cylinder 5, and compression springs 36 are provided on such rods between the upper face of the Iiange 35 and the lower ends of the enlarged portions 33. l

A reservoir or tank 37 for the reception of the non-elastic fluid such as oil is provided, preferably on one of the I-beams 7, and an oil supply pipe 38 extends from such tank to a passageway 39 which extends upwardly through the member 16 being provided with a check valve 40 which is preferablyspring-held on its seat 41 by means of the spring 42. The upper end ofthe passageway 39 is provided with a closure or plug 43 and such passageway 39 communicates with a transverse passagewayy 44 which in turn communicates with the above referred to passageway 1,8 which, is in turn provided with a check valve 45` adaptedv to rest on the seat 46 and spring-held thereonby means of the spring 47, such check valve adapted to open in the opposite direction to the check valve 40. f

Disposed below the valve seat 46 isa Ydiagonal passageway 48 extending from the passageway 18 'and adapted to communicate with the .passageway 49 whichv is connected at its outlet end by a pipe 50 with the reservoir or tank 37. When the relief valve 17, which is positioned to close the passageway 48, is screwed down, such valve prevents the return of oil or other non-elastic fluid from the passageway 48 'to the passageway 49, such relief valve being preferably provided with a lever handle 51.

A pipe 52Sleading from the cylinder 5 to apres'- sure gauge 53 is provided to indicate the pressure 'inthecylinder 5. Y y

The device operates as follows:-` The work is placed'on the table constituted by the I-beams 7 and non-elasticfluid is admitted intothe-passageway 18 of thev member ly'from the tank 37' through the pipe y38 and passagewaysv 39 and by pulling up the pump handle 25, thus causing the pump plunger 22 to move upwardly inthe pump cylinder 19 creating a suctionin the passageway 18 which draws the non-elastic-fluidfromthetank thereinto.

Upon the pump handle 25 being then moved downwardly 'the liquid inthe passageway 18 .isforced through the check valve 45 into the tube 15 and vfrom thence'intov the-cylinder .5l Further reciprocation 'of the pump plungerwill cause' the vpressure in the cylinderz tor be built up' to vthe required extent, forcing, down the plunger 13 intoengagement withn thefworkv and causing such plunger to exert pressure upon such work. f

`The check valve'45 prevents the fluid backing A`up in the passageway 18 on the. suction stroke of the pump, it being assumed of course' that in introducing iiuid to the cylinder 5fthe reliefV ,valve 17 is'closed.l f

Upon yreleasin'g'the fluid pressurein'the cylinder 5 by opening'the relief valve 17,'the springs 36 will return the'k plunger 13 to its initial position illustrated in Fig. 4 and force the huid in the cylinder 5 back into the-tank 37, said fluidV flowing back throughl the tubular member 15,

into the passageways 48fand 49 into the return pipe'5`0 and thence to the tank 37.

It isfound that by the use' of the hand pump'r above described, `depending of courseupon the sizevofthe'cylinder 5, a pressure." of asmuch "as fifty tons can be exerted on' the work, such a's an axle or shaft to be straightened, without therethrough.

undue effort on the part of the operator. Consequently a device of the above type, free from the necessity and complications of being power driven, will be of considerable use in small shops and garages and especially in places unprovided ywith a source of power supply.

What I claim as my invention is:

1. In a press, a base portion having an abutment at its top, la pressure exerting element supporting frame having an abutment at its bottom, and a hinged connection between the frame and the base portion for enabling the frame to be swung to a horizontal positionclear of the base portion, the frame abutment resting on the base abutment when the frame is in the `vertical position and supporting such frame on its base portion.

2. Ina press, a base portion comprising leg brackets each with a flat substantially horizontal top, Va pressure vexerting element supporting frame, including a iiat plate at its lower end,

'plunger reciprocable therein having a work engaging portion protrudingfrom the cylinder, a

source of nonelastic fluid supply, a pressure pump, an integrally formed member between the pressure pump and the cylinder upon which the pump is directly mounted including a passagewaylforrned therein andcommunicating with the Apressure pump and cylinder, a check valve in the passageway permitting the admission of iluid pressure into the cylinder, a second passageway formed in the member communicating with the yfirst, ypassageway above the check'valve, the' second passage connected to the source'of huid supply, anda check valve in the second passageway for preventingretrograde movement of the fiuid i4. fIn a pressjthe combination with acylinder 4adapte'dsto receive-non-elastic fluid pressure, a

plunger reciprccable therein having' a work engaging portion protruding from the cylinder, a

source of-non-elastic. uid supply, a pressure pump, an integrally formed memberbetween the pressure pump'and'the cylinder upon which the pump is directly mounted including a passageway formed therein and'communicating with the pressurepump and cylinder', a check valve in the passageway'permitting the `admission .of fluid pressure into the cylinder, a secondpassageway Aformed in the membercommunicating with the first passageway above the check Valve, the second passage'connected to the source of liuid supply, a check valve in the` second passageway for preventing retrograde' movementof the iluid therethrough,r 'a return fluid passageway formed in the member and extending from below the check valve in the rst passageway and connected with the source of fluid supply, and relief valve for normally closing said return fluid passageway.

5. In Va press, the combination with a pressure cylinder open at its lower end and a plunger re- `ciprocable therein having a work engaging portion protruding from the cylinder, said plunger being withdrawable through the open end of the cylinder, of a'flangeV on the cylinder, rods extending freely through the flange and connected at their lower ends to the protruding work engaging portion of the plunger, a yoke connecting the upper ends of the rods, and compression springs on said rods disposed between the cylinder flange and the yoke. i

6. In a non-elastic uid cylinder press of the pressure pump actuated type, a non-elastic fluid controlling device comprising an integrally formed member1 mounted on the'head of the working cylinder and having a fluid passageway extending therethrough and communicating at one end with the cylinder, the other end of the passageway communicating directly with the pressure pump, a check Valve in the passageway adapted to open in the direction of the working cylinder, a fluid inlet passageway formed in the member extending from the exterior thereof in communication with the rst passageway between the check valve therein and its pump connected end, a check valve in the fluid inlet passageway for preventing retrograde movement of the fluid therethrough, a return fluid passageway formed in the member and communicating with the rst passageway between the check lvalve and its cylinder connected end, the other` end of the return iiuid passageway extending to the exterior of the member, and a relief valve in said return fluid passageway.

7. In a controlling device as claimed in claim 6, wherein said return passageway extends diagonally through the member to an upper corner thereof, and a subsidiary branch extends from the upper end of the return passageway to the exterior of the member, the relief valve being located at the junction of the return passageway and its subsidiary branch.

8. In a non-elastic fluid operated press, the combination with the working cylinder having an open lower end, a plunger inserted into said cylinder and having a lower work engaging end protruding therefrom, a fluid pressure pump mounted above the cylinder head and including a vertically swingable actuating lever and resilient means for restoring the plunger to its uppermost position in the cylinder, said means limiting the stroke of the actuating lever as uid pressure is built up by the pump in the working cylinder thereby preventing the ejection of the plunger from the cylinder.

9. In a non-elastic fluid operated press, the combination with the working cylinder having an open lower end, a plunger inserted into said cylinder and having a lower work engaging end protruding therefrom, a fluid pressure -pump mounted above the cylinder head and including a vertically swingable actuating lever, an external flange on the cylinder, Vertical rods extendi0() ing therethrough and connected at their lower f. ends to the protruding work engaging end of the plunger, a yoke connecting the upper ends of the rods and straddling the pump actuating lever,

and springs on the rods interposed between the yoke and the cylinder flange.

PATRICK J. KEARNEY. 

